BD7F200HFN-EVK-001 ROHM

2017 ROHM Co., Ltd. No. 60AP001E Rev.001 2017.4 User s Guide Switching Regulator Series Isolated Flyback DC/DC Converter BD7F200HFN-LB Evaluation Board BD7F200HFN-EVK-001 (24V15V, 0.15A4ch) BD7F200HFN-EVK-001 Evaluation board delivers four outputs 15 volts from an input 24 volts using BD7F200HFN-LB, Isolated Flyback DC/DC converter integrated circuit, with output current rating of maximum 0.15A. Performance specification These are representative values, and it is not a guaranteed against the characteristics. V = 24V, V = V = V = V =15V, Unless otherwise specified. IN OUT1 OUT2 OUT3 OUT4 Parameter Min Typ Max Units Conditions Input Voltage 24.0 V Output Voltages 1 to 4 15.0 V R4=3.9k, R5=78.7k Output Currents Range 1 to 4 20 150 mA Maximum Output Power10W Operating Frequency 400 kHz Maximum Efficiency 83.6 % I = 150mA OUT1 to 4 Evaluation Board PCB size: 90mm70mm1.6mm PCB0134 S/N 001 24V15V,0.15 A4CH Figure 1. BD7F200HFN-EVK-001 Evaluation Board Figure 2. BD7F200HFN-EVK-001 Evaluation Board Top View Bottom View 2018 ROHM Co., Ltd. No. 61UG015E Rev.002 1/6 NOV.2018 BD7F200HFN-EVK-001 User s Guide Operation Procedures 1. Necessary equipments (1) DC power-supply of 24V / 1A (2) Maximum 0.15A load (3) DC voltmeter 2. Connecting the equipments (1) DC power-supply presets to 24V and then the power output turns off. (2) The maximum load should be set at 150mA and over it will be disabled. (3) Connect positive-terminal of power-supply to VIN terminal and negative-terminal to GND terminal with a pair of wires. (4) Connect positive-terminal of load 1 to VOUT+ 1 terminal and negative-terminal to VOUT-1 terminal with a pair of wires. (5) Connect positive-terminal of load 2 to VOUT+ 2 terminal and negative-terminal to VOUT-2 terminal with a pair of wires. (6) Connect positive-terminal of load 3 to VOUT+ 3 terminal and negative-terminal to VOUT-3 terminal with a pair of wires. (7) Connect positive-terminal of load 4 to VOUT+ 4 terminal and negative-terminal to VOUT-4 terminal with a pair of wires. (8) Connect positive-terminal of DC voltmeter 1 to VIN and negative-terminal to GND for input-voltage measurement. (9) Connect positive-terminal of DC voltmeter 2 to VOUT+1 and negative-terminal to VOUT-1 for output-voltage measurement. (10) Connect positive-terminal of DC voltmeter 3 to VOUT+2 and negative-terminal to VOUT-2 for output-voltage measurement. (11) Connect positive-terminal of DC voltmeter 4 to VOUT+3 and negative-terminal to VOUT-3 for output-voltage measurement. (12) Connect positive-terminal of DC voltmeter 5 to VOUT+4 and negative-terminal to VOUT-4 for output-voltage measurement. (13) DC power-supply output is turned ON. (14) Check DC voltmeters 2 to 5 displays 15V. (15) The loads 1 to 4 are enabled. + VOUT+1 V DC Voltmeter 2 VOUT-1 - VIN + VOUT+2 + V DC Voltmeter 3 DC Voltmeter 1 V VOUT-2 - - VOUT+1 GND + Load 1 - VIN VOUT-1 + VOUT+2 DC Power + Load 2 - - VOUT-2 GND VOUT+3 + Load 3 - VOUT-3 VOUT+4 + Load 4 - VOUT-4 24V15V,0.15 A4CH + VOUT+4 + VOUT+3 V DC Voltmeter 5 V DC Voltmeter 4 VOUT-4 VOUT-3 - - Figure 3. Connection Diagram 2018 ROHM Co., Ltd. No. 61UG015E Rev.002 2/6 NOV.2018